5 because there is 5 electrons. In order for an atom to be neutral it has to have the same amount of positive and negative charges.
In a parallel circuit, the equivalent resistance is the reciprocal of (the sum of the individual reciprocals).
1/R = 1/10 + 1/21 + 1/13
1/R = 0.225 mhos
R = 4.45 ohms
I = V / R
The total current out of the battery is
I = (9v)/(4.45ohms)
I = 2.02 Amperes
As the total current leaves the battery, it splits into 3 paths, and each resistor gets part of it. The 10ohm resistor gets the most current; the 21ohm resistor gets the least current. After flowing through the resistors, the 3 currents join and add up to 2.02 Amperes again, and the same current returns to the battery.
Each resistor has the same 9v of EMF across it.
B. 24 ohms. D. Touch/hold feature
D. From negative to positive =negative charges
B. 24 ohms.
in parallel, combined resistance is less than the lowest resistance
The answer is D. The input force is equal to the output force.
I just did test and got it right
